Hi - I'm working on a circuit that needs a minimum of 8VDC in. I'm planning on using 3 of these li-poly batteries in series to power it:
One thing that wasn't mentioned in the datasheet is how the voltage drops as the battery is discharged. It says that the 'working voltage' is 3.7V, so does that mean the battery is dead by the time it drops below 3.7V? Anyways - can anybody tell me if 3 of these is enough? Or should I step it up to 4?
Also - does anybody know of any other similarly rated batteries? (other manufacturers/types)
So far these batteries have the highest watt hour / gram ratio of any batteries I've looked at. (even much better than li-polys from other manufacturers that charge more than twice as much. Strange...)
On a related note - how difficult is charging a li-poly battery? This is for a one-off board, so I was planning on just buying a li-poly charger, but if it isn't too difficult (maybe some pre-made chips for the purpose?) it sure would be neat to be able to connect a DC power supply to the board and have it charge there.
Thanks in advance,
-M. Noone